Anti-bird perching structure



FIG. 1 is a perspective view of an anti-bird perching structure showing our new design, the broken line showing of a cable/railing is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a miror image of the side shown;

FIG. 4 is an end elevational view thereof, the opposite end being a mirror image of the end shown; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an anti-bird perching structure, as shown and described. 